.bem1{
width: 500px; height: 100px
  
}
.bem2{
   font-weight: bold; font-size: small; color: black; display: flex;margin-left: -20%;
}
.bem3{
    font-weight: bold;
    font-size: small;
    color: black;
    display: flex;
    float: right;
    margin-right: 35%;
}
.bem4{
    width: 40%; float: left; margin-left: 0px
}
.bem5{
    width: 40%; float: left; margin-left: -10px
}
.bem6{
   width: 40%; float: left; margin-left: 0px; margin-top: 30px
}
.bem7{
   width: 40%; float: left; margin-top: 30px; margin-left: -10px
}
.bem8{
    width: 40%; float: left; margin-left: 0px; margin-top: 30px
}
.bem9{
   width: 40%; float: left; margin-top: 20px; margin-left: -22px
}
.bem10{
    margin-left: 150px
}
.bem11{
    margin-left: 60px
}
.bem12{
    margin-top: 20px
}
